Function cssProSupported

Picviewer CE+/Picviewer CE+.user.js:13698–13730

(proName,elem,capitalize)

        //firefox,opera只能大写
        //ie 9+只能小写
        function cssProSupported(proName,elem,capitalize){
            if(capitalize!==false)capitalize=true;
            proName=proName.toLowerCase();

            var prefix=['','-webkit-','-o-','-moz-','-ms-'];
            elem=elem || document.createElement('div');
            var style=elem.style;
            var camelPro;

            // 会有个错误 invalid 'in' operand style
            try {
                for(var i=0,ii=prefix.length;i<ii;i++){
                    var first=true;
                    camelPro=(prefix[i]+proName).replace(/-([a-z])/g,function(a,b){
                        b=b.toUpperCase();
                        if(first){
                            first=false;
                            if(!capitalize){
                                b=b.toLowerCase();
                            };
                        };
                        return b;
                    });
                    if(camelPro in style){
                        return camelPro;
                    }
                }
            } catch(ex) {}

            if(!capitalize)return;
            return cssProSupported(proName,elem,false);

        }

        //css属性值支持
        function cssValueSupported(proName,value,elem){